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EMPLOYEE BENEFIT PLANS - Compensation Costs for Share-Based Payment Arrangements (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Net Periodic Pension Expense      
Defined Benefit Plan Disclosure [Line Items]      
Service cost $ 8 $ 6 $ 6
Interest cost 119 57 46
Expected return on assets (150) (159) (154)
Prior Period Svc Cost Amortization (3) 0 0
Actuarial (gain) loss 0 1 1
Net amortization 43 65 99
Impact of settlement 0 6 6
Net Periodic Pension Expense 17 (24) 4
Post-retirement Plans      
Defined Benefit Plan Disclosure [Line Items]      
Service cost 1 2 2
Interest cost 17 10 8
Net amortization (3) 6 9
Net Periodic Pension Expense 15 18 19
Post-employment Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Service cost 0 1 1
Interest cost 0 0 0
Net amortization 0 0 0
Net (gain) loss 0 0 0
Net Periodic Pension Expense $ 0 $ 1 $ 1